The Plugins stop showing the icon toolbar upgrading to photoshop 2021

hi,
The Nik collections plugins didn’t work after I upgrade to photoshop 2021. but strange behavior occured.
I keepet the two last version of Photoshop 2002 and 2021
in photoshop 2020 the plugins show itself only in the menu filters>nik collection and any plugins is working just fine but the plugins toolbar disappeared.
on the other hand in photoshop 2021 It didn’t work at all but the toolbar present

is there any way to get back the toolbar to be shown in photoshop 2020?

Thank you

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